Implement the #define_other_target directive.

llvm-svn: 38984

1 files changed, 7 insertions, 0 deletions

diff --git a/clang/Lex/PPExpressions.cpp b/clang/Lex/PPExpressions.cpp
index 3217df9fc9e..9ed59d5b13a 100644
--- a/clang/Lex/PPExpressions.cpp
+++ b/clang/Lex/PPExpressions.cpp
@@ -106,6 +106,13 @@ static bool EvaluateValue(int &Result, LexerToken &PeekTok, DefinedTracker &DT,
         PP.getTargetInfo().DiagnoseNonPortability(PeekTok.getLocation(),
                                                   diag::port_target_macro_use);
       }
+    } else {
+      // Use of a target-specific macro for some other target?  If so, warn.
+      if (II->isOtherTargetMacro()) {
+        II->setIsOtherTargetMacro(false);  // Don't warn on second use.
+        PP.getTargetInfo().DiagnoseNonPortability(PeekTok.getLocation(),
+                                                  diag::port_target_macro_use);
+      }
     }
 
     // Consume identifier.